How to Calculate Monthly Disposable PPE Consumption for a Food Plant

Disposable PPE is a repeat purchase, and running out is expensive: production waits, or someone skips an item. Most plants order by habit, reordering when the cabinet looks empty. A short calculation gives a better basis for orders, helps when comparing quotes, and makes reorder timing predictable. This guide shows the method with a worked example. The figures are illustrative; replace them with your own.

Step 1: count the people and the changes

For each item, count how many people use it per shift and how often it is replaced. A hair net may be changed once per shift and again after a long break; a PE apron may be changed several times during a wet shift; shoe covers may be changed every time a worker crosses a zone boundary. The replacement rule in your hygiene policy is the starting point, adjusted for what actually happens on the floor.

Step 2: apply the formula

For each item: people per shift, multiplied by changes per person per shift, multiplied by shifts per day, multiplied by working days per month. Then add visitors and contractors, and a loss allowance for damaged or discarded items.

A worked example

These figures are an example only. Add visitors and contractors on top, and a percentage for damage or loss, often around ten percent until you have measured your own rate.

Step 3: convert to cartons

Divide the monthly total by pieces per carton and round up. Mixed pallets of different items are easier to manage if you know the number of cartons per item, so ask the supplier for the carton quantity of each product and plan storage space for a full month plus safety stock.

Step 4: set the reorder point

• Daily use equals monthly total divided by working days.
• Reorder point equals daily use times total lead time, plus a safety margin.
• Use the real total lead time, from placing the order to goods on your dock. For imported items, production and shipping together typically take 7 to 21 days depending on the item and destination.
• Reorder when stock reaches that level, not when the shelf looks empty.

Review the numbers

Check actual usage against the estimate after the first two months and adjust. Seasonal peaks, new lines, extra visitors during audits and changes to the hygiene policy all move demand. A short monthly review keeps the order quantity accurate and prevents both shortages and overstocking.

Common estimating mistakes

• Counting only production staff and forgetting visitors, contractors, auditors and agency workers.
• Using the written rule for changes instead of what staff do on a busy shift, which is usually more.
• Ignoring seasonal peaks, new lines and shutdown periods when the plant is cleaned and re-staffed.
• Estimating in pieces but ordering in cartons, and then running short because of rounding.
• Forgetting that pairs and single items count differently: shoe covers and sleeve covers are used in pairs.

Make the estimate a monthly routine

Keep a simple sheet with one row per item: monthly estimate, actual use, cartons on hand, reorder point and lead time. Update it after each delivery. In a few months you will see which items are consistently over or under the estimate, and you can adjust the order quantity and the safety stock accordingly. This also gives you a clean figure to share with a new supplier when you ask for a quotation.

If you send Disponord your headcount, shifts and item list, we can help turn it into a carton plan and a quote for bulk supply of hair nets, beard covers, aprons, shoe covers, sleeve covers, gowns and coveralls.